Braun



P. F. AUGENBRAUN.

LOCK Foa AUTOMOBILE moons.

APPucmoN man ocT. 1, 1920. 1 ,379,508. Pf/Blltd May 24, 1921.

2 SHEETS-SHEET 1. 30

P. F. AUGENBRAUN.

LOCK FOR AUTOMOBILE DOORS.

APPUCATION FILED ocT. l. |920.

1 ,379,508. Patented May 24, 1921.

2 SHEETS-SHEET 2.

.Y -v y'"'INVMTOR' UNITED STATES'.

.PATENT OFFICE.

PETER. F. AUENmUN, 0F STAIFORDyCONNEOTIGUT, ASSIGNOR TO THE YALE TOWNE IANUFACTURING COMPANY,OF STANFORD, CONNECTICUT.

LOCK FOR AUTOMOBILEDOOBS.

Specification of Letters Patent.

Patented May 24, 1921.

To all whom it may concern Be it known that I, PETER F. AUGEN- BRAUN, a citizen of the United States, and a resident of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Locks for Automobile-Doors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in locks for automobile doors, the object being to provide improved means for actuating the latch bolt from the inner side of the door and independent means for actuating it from the outer side, and it consists in the details of construction as will be more fully 4explained and pointed out in the' claims.

In the accompanying drawings, Figure 1 is a view in elevation of the lock from the outer side, the mechanism for actuating the bolt from the inner side being in section; Fi 2 is a view in section on the line 2-2 oflig. 1; Fig. 3 is a view in plan of the cam mechanism for retractin the bolt from the inner side of the door; ig. 4 is a view in side elevation of the cam handle; Fig. 5 is a view in elevation of the head or plug adjzustably secured to the pull rod; Figs. 6 and are views of the ul rod; Figs. 8 and 9 4 are views of the be l crank lever and Figs.

10' and 11 are views of a modified form of pull rod actuating means.

The automobile vor other vehicle door is recessed on its inner face to receive the lock, the casing 12- of which is in the form of an angle plate, and is secured to the door by screws in the 4ordinary and well known manner.

Secured to the inner face of the casing 12 is the L-shaped plate 13, provided with screw holes for the passage of the screws 14 which secure it to the casing, spacing lugs being struck up from the late around the scre'w holes, as shown in Fig; 2, for holding the plate away from the casing suiciently to recetve the projecting lugs 15-'16 on the bolt ,17 andthe pull or lifting rod 18.

The.` latch bolt is mounted to slide againstthe face of' the casing12 and is supported at its rear end by the plate 13 and between the lugs 19 struck up from the casing, and by lts head 20 resting in a slot in the end flange 21 of the casing.

The projecting lug 16 on the bolt 17 is engaged by the roll back 22 on the outside handle hub 23 for retracting the bolt from the outer side of the door, and the projecting lug 15 on the bolt is engaged by the long arm of the bell crank lever 24. The bell crank 24 is pivotally7 mounted on a bearing stud 25 carried by the casing 12 and the L-shaped plate 13, with its long arm vertical and bear1ng adjacent its upper free end against the free end of the lug 15. The short arm of the bell crank extends horizontally above the bolt and is provided with a hole for passage of a pin 26 which connects `it with the lifting or pull rod 18. The lower end of this rod is flattened as shown in Figs; 6 and 7 and this flattened portion is provided with a hole to receive the pin 26 for connecting the said rod with the bell crank. This rod extends upwardly to the top of the door, or to the sill of the window in the event the lock be used on a closed car, and is threaded at its upper end for the adjustable attachment of the head or plug 27. This plug is cylindrical in shape at its u per and lower ends and is provided interme iate said cylindrical ends with an angular portion 28 of less diameter than the cylindrical parts, and is mounted to move vertically in the plate 29 which is secured to the u per edge of the door, or to the window si l, in the event the latch be used on a closed car. This plate 29 is provided centrally with a thickened bearing in which the said head or plug 27 is mounted to move. This thickened part projects above and below the plate as shown in Fig. l, and the top surface of the upwardly projecting portion is beveled or inclined as shown, forming a c am surface on which th'e correspondingly shaped lower face of the hub of handle 30 rests and on which it is supported. The head or plug 27 passes through the plate 29 and through the hub `of handle 30, and is provided at its upper end with a'lange 31 which rests with- .in a recess in the hub of the handle, so that the handle, when in the position shown in Fig. 1 is turned laterally, its cam face riding on the cam face of the plate 29 rises and lifts the plug and consequently the lifting or pull rod, which is adjustably secured to the said plug. The head or plug 27 is prevented from rotating in its bearing bythe screw 31a secured within the upwardly projecting portion of plate 29 and resting adjacent to one of the {iattened faces of the angular part 28 of the head or plug, which screw also limits the vertical movement of the head or plug, the length of the angular portion of the head being suflicient to permit of the necessary vertical movement. The handle 30 Vis loosely journaled or mounted onrthe head 27 so that when the handle is turned it turns'on the head 27 and lifts the latter `mally held projected by the spring 32 which bears at its free Vend against the rear face of lug 16 on the bolt 17. From the foregoing it will be seen that if lthe handle 3() be turned it will be elevated by* the contacting cam faces and lift the head 27 and attachedpull or lifting rod 18, thus turning the bell crank in a direction toretract the bolt. As soon as the handle 30 is released, the tension of the spring 31b restores. the bell crank and its actuatingy parts to their normal position, and the spring 32 projects the bolt to its locking position. The bolt may be retracted from the outside by a handle connected with the roll back hub 23 and when the latter is turned the roll back 22 acting against the lug 16 retracts or withdraws the bolt without dis- ;turbing or moving the bell crankor its actuating parts.

VMounted in the casing-k12 and accessible from the inside ofthe car is the thumb turn or knob 33, the stem of which is provided at its inner end with a disk 34 carrying an eccentric pin 35, which may be moved by the thumb turn into a recess in the underside of the shank 17 of the bolt and thus dead lock the latter against movement by either the outside or inside handles. and its stem are prevented from accidental turning movement by the spring washer 36 interposed between the casing 12 andthe knob, but is free to be turned to shift the dead locking pin to its two positions.

With my improved lock, each bolt retract-y ingdevice acts independently of the other, that is to say the bell crank lever and roll back engage independent lugs'on the bolt so that when the roll back is turned to 'retract the bolt the bell crank lever is not moved and when the bell crank lever is The thumb turn shifted by turning the handle 30, the roll back 22 is not disturbed or moved. Again when the bolt is retracted by the outside handle, the tension of spring 32 only has to f be overcome, whereas when the bo is retracted by the handle 30, the cam of which affords powerful leverage, the tension of both springs 32 and 31D has to be overcome.

In the construction shown in Figs 11 and 12, I have shown an oscillating cam lever 30a connected with the upper end of the rod 18 and mounted to be rocked on a concaved seat formed in the upper face Yof the plate 29.

`lith this construction the enlargement of my invention hence I would have it understood that I do not Wish to confine myself to thc exact construction and arrangement i of arts shown and described but,

aving fully described my invention what I claim as new and desire to secure by LettersPatent, is-:-

1. In a. lock for automobile doors,v the combination of a latch bolt normally proj ected by a spring and havinga projecting lug, a bell cranklever one arm of whlch 1s adapted to engage said lug, a spring for normally holding the arm of the bell crank away. from thelug, a lifting rod connected with the other arm of said lever, and a cam handle mechanism connected with said rod for lifting the same.

2. In a lock for automobile doors, the combination of alatch bolt having a rojecting lug, a spring for yieldingly holding the bolt projected, a bellcrank lever one arm of which is adapted to engage the lug on the bolt, a lifting rod connected to the other arm of said lever, a head adjustably secured to the.. upper end. of said lifting rod so as to,

be' accessible at the top and cam mechanism acting on said head .for lifting the rod ver-V said rod for lifting the same'to retract the latch bolt. n

4. In a lock for automobile doors, the combination of a latch bolt normally projected by a spring and having a rojecting lug, a bell crank lever lone arm of)which is adapted to engage said lug, a lifting rod connected with the other arm of said lever, a head adjustably secured to the upper end of said rod, and a cam mechanism engaging said agjustable head for actuating the lifting r 5. In a lock for automobile doors, the combination of a latch bolt normally projected by a Spring and having a projecting lug, a bell crank levell one arm of which is adapted to engage said lug for retracting the bolt, a spring normally holding the bell crank away from the lug, a lifting rod connected with the other arm of said lever and a cam handle mechanism for lifting said rod against the tension of the spring acting on the bell crank.

6. In a lock, the combination of a latch bolt normally projected by a spring and having a projecting lug, a bell crank lever one arm of which is adapted to engage said lug for retracting the bolt, a lifting rod connected with the other arm of said lever a head adjustably secured to the upper end of said rod, a cam handle engaging said head and a cam surface on which said handle rests and moves.

7. In a lock, the combination of a latch normally projected by a spring and having a projecting lug, a bell crank lever one arm of which is adapted to engage said lug for retracting the bolt, a lifting rod connected with the other arm of said lever, a plate secured to the door and provided with an upwardly projecting cam surface, a head adjustably secured to the upper end of the lifting rod and mounted to move in said plate and a cam handle engaging said head and bearing on the cam surface of the plate whereby when the handle is turned the. rod Will be lifted and the bolt retracted.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

PETER F. AUGENBRAUN.

Witnesses:

STANLEY C. WHITNEY, CHAs. A. BERRY. 

